IPD Plenums 981 DFI GT4 / Boxster Spyder (3.8L) Competition Plenum Add GT3 Throttle Body?:Yes consistent geometry

consistent geometry

Specifically designed to handle high horsepower applications when using turbos and / or nitrous

Oil vapor blow-by can have a detrimental effect on your engine – reducing power output and even causing harmful detonation by altering your air/fuel ratio

this pump setup is good for over 1900hp on Race Gas or 1400hp on E85

Now in its 3rd generation

IPD Plenums 981 DFI GT4 / Boxster Spyder (3.8L) Competition Plenum Add GT3 Throttle Body?:Yes consistent geometryAfter a very extensive R & D program we are proud to launch the new 981 IPD 82mm Competition Plenums. We only offer "Competition" versions of the 981 Plenums which upgrades the factory 74mm throttle body with the larger 997 GT3 82mm throttle body. This combination has proven to be considerably more popular and deliver even more performance. This Competition version will work with both 3. 4L "S" and 2. 9L "Non S" applications. The 981 intake is nearly